Improvement in screw-nozzles for cans



FREDERICK W. DEVOE, OF ,NEW YORK, N. Y.

IMPROVEMENT IN SCREW-NOZZLES FOR CANS.

Speciiicationforming part of Letters Patent No. 87,915, dated March 16, 1869.

To all .whom 'it may concern: v

Be it known that I, FREDERICK W. Devon, of the city, county, and State of New York, have invented a new-and useful Improvement in Screw-Nozzles for Gans and other Vessels; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, in

l which- Figure l is a vertical section of a screw-nozzle with the cap applied. Fig. 2 is a vertical section ofthe nozzle with the caprcmoved and a cork inserted. Fig. 3 is a plan of the nozzle wit-hout the cap. Fig. 4 is an elevation of the same.

Similar letters of reference indicate corresponding parts in the several figures.

The object of my invention is to produce a cheap, simple, and perfectly tight can-nozzle of sheet metal; and it consists in spinning or rolling the neck of the can, so as to form a screw for a portion of its length and a cylindrical contracted portion at its upper edge, and, in combination with such neck, a cap having a correspondingly spun or rolled screw portion, and a contraction to lit snugly around the cylindrical orifice at the top of the neck, whereby to guide its edge uniformly' to the same bearing on the yielding packing within thehead ofthe cap.

To enable others skilled in the art to make and use my invention, I will proceed to describe it with reference to the drawings.

A is the nozzle, B is the cap, and C is the gasket tted to the head of the cap.

The nozzleAis constructed like other screwnozzles which are made of sheet metal, except that it is made with the upward cylindrical extension a above the screw-thread b, such extension presenting, as shown in Fig. 3, a circular edge concentric with the axis ot' the nozzle.

The'cap B is constructed like other screwnozzles which are made of sheet metal, except that its head is made with the upward exten sion c, corresponding with the upward extension a of the nozzle, lfor the reception of the latter extension when the cap is screwed on, the interior of c being a little larger than the exterior of c, in order that the edge of the latter may not come too near the edge of the gasket C.

The gasket may be made ot cork or other material, either in the form of a disk covering the whole ot the interior of the head, or a mere ring surrounding the interior. It is sprung into the head within the slight internal projection formed by the contraction e ofthe cap at the `junction of the screw-thread with the extension c.

What I claim as my invention, and desire to secure by Letters Patent, is-

A sheet-metal can-nozzle and cap spun or rolled to forni a screw, b, with a contracted cylindrical part, a, on the nozzle, and a correspondin g screw and annular contraction, e, in the cap, substantially as shown and described, as a new article of manufacture.

FREDERICK Vv. DEVOE. IVitnesses J. SEAVER PAGE, GEO. W. BETTs. 

